How to Install Masonry Anchors

Written by cheryl torrie
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There are four basic types of mechanical masonry anchors: concrete screws, which cut their own thread into the masonry; hammer anchors that come in a variety of styles and are driven into the masonry with a hammer; one-piece expansion anchors that require no hole spotting and are forged to form their own grip in the masonry; and two-piece masonry anchors that have a anchor slightly larger than the fastener, causing you to have to position and place the anchor before positioning the material to be anchored and the fastener. The installation of each is different.

Skill level:
Moderate

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Things you need

  • Hammer drill
  • Drill bits
  • Hammer
  • Screw driver
  • Pencil
  • Masonry anchors

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Instructions

    How to Install Concrete Screws

  1. 1

    Install a bolt hole in the material to be anchored to the wall. The bolt hole needs to be large enough for the screw shaft to pass through, but smaller than the head of the screw.

  2. 2

    Place the material to be anchored to the masonry into position.

  3. 3

    Place the correct bit into your hammer drill following the concrete screw manufacturer's specification.

  4. 4

    Drill a pilot hole longer than the length of the concrete screw into the masonry.

  5. 5

    Place the screw through the bolt hole into the pilot hole and secure the material to the masonry by screwing the concrete screw tightly to the material.

    How to Install Hammer Anchors

  1. 1

    Install a bolt hole in the material to be anchored to the wall. The bolt hole needs to be large enough for the hammer anchor sleeve to pass through, but smaller than the sleeve flange.

  2. 2

    Place the material to be anchored to the masonry into position.

  3. 3

    Place the correct bit into your hammer drill following the hammer anchor manufacturer's specification.

  4. 4

    Drill a pilot hole longer than the length of the anchor into the masonry.

  5. 5

    Place the anchor through the bolt hole into the pilot hole and secure the material to the masonry by hammering the anchor down with a hammer.

    How to Install One-Piece Expansion Anchors

  1. 1

    Install a bolt hole in the material to be anchored to the wall. The bolt hole needs to be large enough for the sleeve anchor or wedge anchor to pass through, but smaller than the sleeve flange or wedge head.

  2. 2

    Place the material to be anchored to the masonry into position.

  3. 3

    Place the correct bit into your hammer drill following the one-piece expansion anchor manufacturer's specification.

  4. 4

    Drill a pilot hole that is at least one quarter-inch longer than the length of the anchor into the masonry.

  5. 5

    Place the anchor through the bolt hole into the pilot hole and secure the material to the masonry by turning it two to five turns. Wedge and sleeve one-piece expansion anchors are slightly different. Refer to the manufacturer's installation instructions to verify the number of turns, and if a torque wrench is required for proper installation.

    How to Install Two-Piece Expansion Anchors

  1. 1

    Install a bolt hole in the material to be anchored to the wall. The bolt hole needs to be large enough for the screw shaft to pass through, but smaller than the head of the screw.

  2. 2

    Place the material to be anchored to the masonry into position.

  3. 3

    Mark the position of the bolt hole on the wall by placing a pencil through it and marking the wall. Set aside the material to be anchored.

  4. 4

    Drill the hole for the anchor at the marked position following the manufacturer's specifications. Seat the anchor into the hole by tapping it lightly with a hammer.

  5. 5

    Place the material back into position. Line up the bolt hole and the anchor. Screw the screw through the bolt hole and into the anchor until it is snug.

Tips and warnings

  • Always wear eye protection when installing masonry anchors.
  • Use the right anchor for the load and position the anchors correctly in the masonry.

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